Adrian,
I thought that was for the Satstat, is the 3801 auto sensing? Don't you need
to send a command?
Bob
----- Original Message -----
From: "Adrian" <rfn...@arcor.de>
To: "Discussion of precise time and frequency measurement" <time-nuts@febo.com>
Sent: Monday, June 14, 2010 5:29 AM
Subject: Re: [time-nuts] My stubborn Z3801A
It's in the same menu where you start / stop communication, just below
the 'Port Open' command.
CommPort > Settings > Baud Rate
Adrian
Robert Benward schrieb:
The minimum voltage is +/-3 volts, I'm getting about +/-6 right now.
How does one change the serial port speed, I don't see anything in
SatStat.
Bob
----- Original Message ----- From: "John Miles" <jmi...@pop.net>
To: "Discussion of precise time and frequency measurement"
<time-nuts@febo.com>
Sent: Sunday, June 13, 2010 8:21 PM
Subject: Re: [time-nuts] My stubborn Z3801A
Still to go: The RS-232 signals look fine going into the cable,
+/-5V, any
ideas why the computer won't read it? Am I missing something? I
tried two
different ports in case I screwed one up one of the ports, but no luck.
Haven't been following the thread so someone may have suggested this
before,
but: try another computer, a shorter cable, or perhaps a slower baud
rate.
5 volts is near the bottom of the range for RS232 (the signalling
levels are
supposed to be closer to +/- 15V, or at least +/- 12V).
Some RS-232 gear is happy with 5V but it isn't optimal in all cases.
The
problem you mention is more likely to be either a physical or
protocol-level
mismatch than a real hardware fault.
-- john, KE5FX
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